Piston-cooling device.



N. S. BEEBE.

PISTON COOLING DEVICE.

APPLICATION FILED JULY 26, 1 913.

Patented Mar. 17, 1914.

urr.

AT NT NATHAN s. BEEBE, or KANSAS CITY, MISSOURI.

PISTON-COOLING DEVICE.

Application filed July 26, 1913. Serial No. 781,299.

Tool] l//l//./H it may concern:

Be it known that I, NATHAN S. BEEBE,

a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Piston- (looling Devices, of which the following is a specification.

This invention relates to piston cooling devices for use particularly in connection with explosive engines, and has for its ob ject the production of a simple means connected with the piston and crank rod of the engine cylinder whereby an eflicient circulation of air may be maintained Within the piston, thus acting to cool the latter and ma tcrially reduce the tendency of carbon to collect upon its working face. This in turn diminishes the load upon the engine and ma- 3 terially lessens the amount of lubrication required.

' Specifically this cooling means comprises a fan pivoted within the piston at'one side of a batlle plate which partially divides the space within the piston, and a sliding connection between the fan and the crank rod so that oscillation of the latter will cause a vibration of the fan, thereby creating a current of air which will be inward on one side of the'bafile plate and outward on the other side. thereof.

comprises various novel and peculiar features of construction hereinafter described and particularly pointed out in tl appended claims; and to afford a full and clear understanding of the same, reference will be had to the accompartying (.lrawing, forming a part of this specification, in which Figure l is a central axial section through a piston and its connecting rod, with m improved cooling device applied thereto; Figs. 2 and 3 are sections along the line Il.-ll and III--Ill respectively of Fig. 1,

looking in the directions of the correspondng arrows.

Referring to the drawing, rnypiston cooling attachment. is illustrated in connection with a hollow sliding piston 2 having; a connecting rod 4 pivotal y mounted therein on a pin (3. The. piston is also provided with a bafiie plate 8 arranged thereinso that air may enter on one side of the plate and.

circulate within the piston arouiid the front end of the plate ad a-cent the front end of and organization, asl

the piston, thereafter passing out of the piston on the opposite side of the plate.

For generating the current of air, a fan 10 is carried by the piston, which is provided with an angular bracket 12 secured by rivets 14 ,to the rear edge of the piston at one side of the plate 8, said bracket having a pin 14 for pivoting the end of an arm 16 projecting rearvardly from the fan. Near its front end, adjacent the body portion of the fan, the arm 16 carries a bolt 18, which projects toward the batlie plate 8 and has journaled thereon a slideblock 20. This block is designed to operate within the forked. end of a bracket 22 which projects through a curved slot-24 providedin the battle plate, and is secured by rivets 26 to the connectingred 4 on the opposite side of said plate from the fan 10.

From the foregoing it will be understood that as the piston is reciprocated by the crank connecting rod 4, .the latter oscillates 22 from one end of the slot 24 to the other.

This bracket carries with it the block 20 connected to the fan, the block 20 being slidingly mounted in the forked end of the bracket to accommodate these movements. It. is thus apparent that the fan is oscillated about its pivot 14 for each oscillation of the 5 connecting rod, and as a consequence a curlVith this ob ect in view,- my-in'ventlon:

rent of air is createdavithin the piston about the baffle plate 8, and it is also obvious that the degree of air circulation which is de velo'ped will be directly proportional to the activity of the engine. f This of course tends to lower the temperature of the interior of the piston, and incidentally keeps down the temperature of the working face thereof, thus tending to minimize the deposit of carbon which con'nnonly takes place upon the piston when it becomes unduly heated. This in turn reduces the amount of work required of the. engine and the amount of lubrication necessary.

By the above. means I succeed in materially diminishing the maintenance cost of the engine, and while have illustrated one form or embodiment which my irwention is adapted to take, the same is susceptible of .various changes in minor particulars, and I the combination of a hollow sliding piston,

the interior of said piston being partially.

divided by a partition, a connecting rod, fanning means carried by said piston, and connections between said means and said connecting rod whereby the angular movement of the latter will operate the former to generate an air current within the piston around said partition.

, 2. In a device of the character described, the combination of a hollow sliding piston, the interior of said piston being partially divided by a partition, a connecting rod, a

'fan pivotally mounted within the piston,

and connections between said fan and rod and extending through said partition whereby the oscillation of said rod withinthe piston oscillates said fan to generate an air current within the piston around said partition.

3. In a device of the character described, the combination of a hollow sliding piston,

the interior of said piston being partially.

vided by a baflie partition, a bracket secured to saidcpiston, a fan pivoted upon said bracket and extending Within the piston to one side of said partition, said partition being provided with a curved slot, a slide block journaled on said fan adjacent said slot, a connecting rod, and a forked bracket carried by said rod adjacent said slot and extending through the latter into sliding engagement with said block, whereby oscili lation of said rod will oscillate said fan to generate air currents within the piston around said partition.

5. In a cooling device. for .pistons, the combination of a sliding piston, a connecting rod, a fan pivoted to said piston, and connections between said rod and fan whereby angular movement of the rod relatively to the piston will oscillate the fan.

6. In a cooling device for pistons, the combination of a sliding piston, a connecting rod, a baffle plate carried by said piston,

a fan pivoted to said piston at one side of said plate, and connections between said rod and fan whereby angular movement of the Eod relatively to the piston will oscillate the In testimony whereof, I aflix my signature, in the presence of two witnesses.

NATHAN S. BEEBE.

' Witnesses:

CHAs. W. GERARD, G. Y. THORPE. 

